JPS5834668Y2 - Denjike Denki - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electromagnetic relay, and more specifically, to an improvement in the assembly structure of an armature that is attracted to the magnetic pole piece of an electromagnetic relay and a hinge spring that returns the armature.

Electromagnetic relays used in communication equipment etc. are composed of many parts, and to make them smaller, it is naturally necessary to make each part smaller, but it is also important to efficiently design a single component for multiple uses. is also necessary.

FIG. 1 is a partial side view of a conventional electromagnetic relay, in which 1 shows a core magnetic pole piece, 2 a yoke, 3 an armature, and 4 a hinge spring.

One of the hinge springs 4 for returning the armature 3 is fixed to the lower surface of the armature 3 by welding or the like, and the other is attached to the yoke 2.
It is fixed on the top surface of the

In this type of conventional structure, a gap equal to the thickness of the hinge spring 4 is created between the yoke 2 and the armature 3, resulting in a rough magnetic circuit and an increase in leakage reactance in the thick part of the hinge spring. This results in inefficiency.

Measures have been taken to compensate for this, such as using magnetic and expensive stainless steel for the hinge spring 4, but this has the drawback of increasing costs.

An object of the present invention is to provide an electromagnetic relay that eliminates the drawbacks of the prior art and can be realized at low cost.

The feature of this invention is that the movement fulcrum part of the armature is formed into a concave shape to match the shape of the hinge spring, and the hinge spring is fitted and connected to the concave part, so that the contact part of the yoke and the armature are brought into close contact. The point is in the composition.

An embodiment of the present invention will be described in detail below with reference to FIGS. 2 to 5.

FIG. 2 is a partial side view of the electromagnetic relay corresponding to FIG. 1, and the same reference numerals as in FIG. 1 indicate the same parts.

3 is a side view showing the assembly structure of the armature 3' and hinge spring 4' of FIG. 2, and FIG. 4 is a bottom view thereof.

FIG. 5 is a perspective view of the armature 3'.

As shown in FIGS. 4 and 5, two four parts 5, 5' are formed at the operating fulcrum of the armature 3', corresponding to the shape of the hinge spring 4'.

The hinge spring 4' is partially fitted into the recesses 5, 5', and when assembled into an electromagnetic relay as shown in FIGS. 2 and 3, the hinge spring 4 is inserted between the yoke 2 and the armature 3'. There are no gaps due to thickness, and a good magnetic circuit can be formed.

As is clear from the above examples, the present invention has a close contact structure between the yoke and the armature, making it possible to construct a magnetic circuit with less leakage reactance, making it cheaper than conventional electromagnetic relays using magnetic stainless steel. Can be configured.

This effect is particularly great when the electromagnetic relay is miniaturized.

[Brief explanation of drawings]

Figure 1 is a partial side view of a conventional electromagnetic relay, Figures 2 to 5
The figures show one embodiment of the present invention, in which Fig. 2 is a partial side view of an electromagnetic relay corresponding to Fig. 1, and Fig. 3 is a partial side view of an electromagnetic relay corresponding to Fig. 1.
A side view showing the assembled structure of the armature and hinge spring shown in the figure.
FIG. 4 is a bottom view of FIG. 3, and FIG. 5 is a perspective view of the armature according to the present invention. Explanation of symbols 1... Iron core magnetic pole piece, 2...
・Yoke, 3'...Amateur, 4'...
・Hinge spring, 5, 5'... recess.

Claims (1)

[Scope of utility model registration request] In an electromagnetic relay in which a hinge spring is overlapped and joined to an armature that is attracted to a magnetic pole piece, and the hinge spring is attached to a yoke, four parts corresponding to the thickness of the hinge spring are formed on the operating fulcrum side of the armature, and the An electromagnetic relay characterized by a structure in which the yoke and the armature are in close contact with each other by fitting and joining a hinge spring.